In The Public Discourse:

Research shows the positive economic effect of two-biological-parent families on our society. Single parenthood and other alternative family structures not only hurt our economy, they hurt our children, those who care for them, and those for whom our children will care later in life. The first in a two-part series.

... The relationship between the two-biological-parent family and economic prosperity is an immense one. As Harnish McRae observes, “the conventional family is an efficient mechanism for combining bringing up children and making a living.” There are a number of reasons why non-traditional family structures constitute such a drain on the American economy. In fact, unless this trend is reversed, the United States appears destined to lose its position as the world’s foremost economic power, a position it has enjoyed since about 1900.